To ensure reliability, purchase GM part # 1977064 Diode,Trio. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet P20, P30 models. It fits GMC P2500, P3500.
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